89c51 port epansion with 8255 keil c

hi friends, i wanted to increase the port pins with the help of 8255 for 89c51 mcu(atmel) does any one have the c codes that can work with keil uvision (or c51 compiler). i simply require a...
89c51 port epansion with 8255 keil c

hi friends, i wanted to increase the port pins with the help of 8255 for 89c51 mcu(atmel) does any one have the c codes that can work with keil uvision (or c51 compiler). i simply require a...
Re: 89c51 port epansion with 8255 keil c

we had a good discussion abt 8255 ports and pins . thanks friends. but i have found the shortest way for solving my fundamental problem. and that is--> to use the switches in matrix form. i can use...
Re: 89c51 port epansion with 8255 keil c

we had a good discussion abt 8255 ports and pins . thanks friends. but i have found the shortest way for solving my fundamental problem. and that is--> to use the switches in matrix form. i can use...
Writing to 8255 Ports using xdata

Hi,I'm using 8051 microcontroller and am new to c51 coding.Somebody pls help me how to write to 8255 using c. Thanks, lina